3. Chemical Reactions

In the reaction PCl3 + Cl2 → PCl5, what is the mole ratio of PCl3 to PCl5?

How many grams of calcium carbonate (CaCO_3) are required to completely react with 25.0 mL of 0.750 M hydrochloric acid (HCl)?

Seawater contains approximately 600 mmol of NaCl per liter. How many grams of NaCl are present in 250 mL of seawater?

Given the reaction S + O_2 → SO_2, how many moles of sulfur (S) are required to produce 15.0 mol of sulfur dioxide (SO_2)?

Given the reaction 2 H_2 + O_2 → 2 H_2O, what mass of O_2 (in grams) is required to produce 55.0 grams of H_2O?

How many oxygen atoms are present in 2.74 g of Al_2(SO_4)_3?

What is the first step in performing mass calculations for chemical reactions?

A reaction requires 0.50 mol of H2SO4. What is the minimum mass of H2SO4 (in grams) needed to provide this amount?

A tablet contains 0.500 g of NaHCO3. What volume of 0.1000 M stomach acid (HCl) could one tablet neutralize, assuming the reaction is NaHCO3 + HCl → NaCl + CO2 + H2O?

When 0.066 mole of sodium (Na) is completely reacted with water according to the equation 2 Na + 2 H_2O → 2 NaOH + H_2, how many moles of hydrogen gas (H_2) are produced?

Given the reaction: CaC2 + 2 H2O → C2H2 + Ca(OH)2, how many grams of H2O are required to produce 13.0 g of C2H2?

How many milliliters of 0.100 M HNO3 are required to completely neutralize 25.0 mL of 0.150 M NaOH?

In the reaction between NaOH and H2SO4, how many moles of NaOH are required to completely react with 38 moles of H2SO4?

How many formula units of Na_2SO_4 are present in a 450 g sample?

In the reaction 2 H2(g) + O2(g) → 2 H2O(g), how many liters of H2 gas at STP are required to produce 2 moles of H2O?